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2. R-407C - Wikipedia

   en.wikipedia.org/wiki/R-407C

   R-407C is a mixture of hydrofluorocarbons used as a refrigerant. It is a zeotropic blend of difluoromethane (R-32), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-134a). Difluoromethane serves to provide the heat capacity, pentafluoroethane decreases flammability, tetrafluoroethane reduces pressure. [1]

3. .22 Spitfire - Wikipedia

   en.wikipedia.org/wiki/.22_Spitfire

   2,700 ft/s (820 m/s) 810 ft⋅lbf (1,100 J) Source (s): Barnes & Amber. The .22 Spitfire is an American wildcat rifle cartridge developed by Col. Melvin M. Johnson. It was originally named the MMJ 5.7mm [1] by its designer and is also known in the U.S. as the 5.7mm Johnson, the Johnson MMJ 5.7mm Spitfire, and the .22 Johnson, (or 5.7×33mm ...

4. List of equipment of the Polish Land Forces - Wikipedia

   en.wikipedia.org/wiki/List_of_equipment_of_the...

   9×19mm Parabellum. Semi-automatic pistol. P99 QA. ~500. Limited use in the Polish Land Forces, predominantly by high ranking officers and members of the general staff. [26] FB VIS 100. Poland. 9×19mm Parabellum.

5. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

6. List of military headstamps - Wikipedia

   en.wikipedia.org/wiki/List_of_military_headstamps

   R SD is at 10 o'clock, the 2-digit year is at 2 o'clock, and the metric caliber is at 6 o'clock. The "L" prefix to the metric caliber means "long" (i.e., L 5,56 or L 7,62×54mm). U Viromet S.A. (1936–1942; 1949–1991; 1991–present) – Victoria, Romania. A factory initially conceived by the Romanian military to make locally produced ...

7. Internal ballistics - Wikipedia

   en.wikipedia.org/wiki/Internal_ballistics

   Internal ballistics (also interior ballistics ), a subfield of ballistics, is the study of the propulsion of a projectile . In guns, internal ballistics covers the time from the propellant 's ignition until the projectile exits the gun barrel. [1] The study of internal ballistics is important to designers and users of firearms of all types ...

8. .22 Remington Jet - Wikipedia

   en.wikipedia.org/wiki/.22_Remington_Jet

   The .22 Jet was designed as a flat-shooting hunting round for handguns, and it is suitable for handgun hunting of varmints and medium game out to 100 yd (90 m). The 2460 ft/s (750 m/s) and 535 ft-lbf (725 J) claimed for factory test loads did not prove out in service weapons..22 Remington Jet dimensions See also.22 Hornet.22 Spitfire

9. To save spotted owls, US officials plan to kill hundreds of ...

   www.aol.com/save-spotted-owls-us-officials...

   To save the imperiled spotted owl from potential extinction, U.S. wildlife officials are embracing a contentious plan to deploy trained shooters into dense West Coast forests to kill almost a half ...